<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>键盘按键</title>
</head>

<body>
    <input type="text">
</body>
<script src="../js/jquery.js"></script>
<script>
    //  $("input").keydown().keypress().keyup() 专业术语叫做链式调用
    $("input").keydown(function (e1){
        // console.log(e1);

    }).keypress(function (e2){
        // keypress无法监控功能按键
        console.log(e2);
    }).keyup(function (e3){
        // 松开按键事件
        console.log(e3);
    })
</script>

</html>